A new report suggests the Islamic State (ISIS) terror group has formed a chemical weapons cell that is situated in Syria along the Euphrates River Valley.

CNN cited a U.S. intelligence officialwho said the new cell brings together chemical weapons specialists from Iraq and Syria. The group has set up shop somewhere between Mayadin, Syria and al Qaim, Iraq.

The U.S. also believes the area has become ISIS's "de facto" capital as U.S.-backed forces close in on Raqqa, Syria. Rumored to be hiding somewhere in the region is ISIS leader Abu Bakr al Baghdadi.